fix: use expected line ending in codex-rs/core/config.schema.json

[bolinfest]

Fixes a line ending that was altered in #10861.

This is breaking the release due to:

codex/.github/workflows/rust-release.yml

Lines 54 to 55 in a118494

	cargo run -p codex-core --bin codex-write-config-schema
	git diff --exit-code core/config.schema.json

This PR updates the test to check for this so we should catch it in CI (or when running tests locally):

codex/codex-rs/core/src/config/schema.rs

Lines 105 to 131 in a118494

	#[test]
	fn config_schema_matches_fixture() {
	let fixture_path = codex_utils_cargo_bin::find_resource!("config.schema.json")
	.expect("resolve config schema fixture path");
	let fixture = std::fs::read_to_string(fixture_path).expect("read config schema fixture");
	let fixture_value: serde_json::Value =
	serde_json::from_str(&fixture).expect("parse config schema fixture");
	let schema_json = config_schema_json().expect("serialize config schema");
	let schema_value: serde_json::Value =
	serde_json::from_slice(&schema_json).expect("decode schema json");
	let fixture_value = canonicalize(&fixture_value);
	let schema_value = canonicalize(&schema_value);
	if fixture_value != schema_value {
	let expected =
	serde_json::to_string_pretty(&fixture_value).expect("serialize fixture json");
	let actual =
	serde_json::to_string_pretty(&schema_value).expect("serialize schema json");
	let diff = TextDiff::from_lines(&expected, &actual)
	.unified_diff()
	.header("fixture", "generated")
	.to_string();
	panic!(
	"Current schema for `config.toml` doesn't match the fixture. \
	Run `just write-config-schema` to overwrite with your changes.\n\n{diff}"
	);
	}
	}